mirror of https://github.com/GNOME/gimp.git
272 lines
7.1 KiB
C
272 lines
7.1 KiB
C
/* The GIMP -- an image manipulation program
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*
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* This file Copyright (C) 1999 Simon Budig
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __PATH_CURVES_H__
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#define __PATH_CURVES_H__
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#define PATH_TOOL_DEBUG
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#ifdef PATH_TOOL_DEBUG
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#include <stdio.h>
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#endif
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#define IMAGE_COORDS 1
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#define AA_IMAGE_COORDS 2
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#define SCREEN_COORDS 3
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#define SEGMENT_ACTIVE 1
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#define PATH_TOOL_DRAG 1
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#define PATH_TOOL_REDRAW_ALL 1
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#define PATH_TOOL_REDRAW_ACTIVE 2
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#define PATH_TOOL_REDRAW_HANDLES 4
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#define SUBDIVIDE 1000
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typedef enum { SEGMENT_LINE=0, SEGMENT_BEZIER} SegmentType;
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enum { ON_ANCHOR, ON_HANDLE, ON_CURVE, ON_CANVAS };
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typedef struct _path_segment PathSegment;
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typedef struct _path_curve PathCurve;
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typedef struct _npath NPath;
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struct _path_segment
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{
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SegmentType type; /* What type of segment */
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gdouble x, y; /* location of starting-point in image space */
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gpointer data; /* Additional data, dependant of segment-type */
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guint32 flags; /* Various Flags: Is the Segment active? */
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PathCurve *parent; /* the parent Curve */
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PathSegment *next; /* Next Segment or NULL */
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PathSegment *prev; /* Previous Segment or NULL */
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};
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struct _path_curve
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{
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PathSegment *segments; /* The segments of the curve */
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PathSegment *cur_segment; /* the current segment */
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NPath *parent; /* the parent Path */
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PathCurve *next; /* Next Curve or NULL */
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PathCurve *prev; /* Previous Curve or NULL */
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};
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struct _npath
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{
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PathCurve *curves; /* the curves */
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PathCurve *cur_curve; /* the current curve */
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GString *name; /* the name of the path */
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guint32 state; /* is the path locked? */
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/* GimpPathTool *path_tool; */ /* The parent Path Tool */
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};
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typedef void
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(*PathTraverseFunc) (NPath *,
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PathCurve *,
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gpointer);
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typedef void
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(*CurveTraverseFunc) (NPath *,
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PathCurve *,
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PathSegment *,
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gpointer);
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typedef void
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(*SegmentTraverseFunc) (NPath *,
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PathCurve *,
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PathSegment *,
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gint,
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gint,
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gpointer);
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/*
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* This function is to get a set of npoints different coordinates for
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* the range from start to end (each in the range from 0 to 1 and
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* start < end).
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* returns the number of created coords. Make sure that the points-
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* Array is allocated.
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*/
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typedef guint (*PathGetPointsFunc) (PathSegment *segment,
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gdouble *points,
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guint npoints,
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gdouble start,
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gdouble end);
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typedef void (*PathGetPointFunc) (PathSegment *segment,
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gdouble position,
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gdouble *x,
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gdouble *y);
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typedef void (*PathDrawHandlesFunc) (GimpDrawTool *tool,
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PathSegment *segment);
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typedef void (*PathDrawSegmentFunc) (GimpDrawTool *tool,
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PathSegment *segment);
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typedef gdouble (*PathOnSegmentFunc) (PathSegment *segment,
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gint x,
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gint y,
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gint halfwidth,
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gint *distance);
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typedef void (*PathDragSegmentFunc) (PathSegment *segment,
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gdouble position,
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gdouble dx,
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gdouble dy);
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typedef gint (*PathOnHandlesFunc) (PathSegment *segment,
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gdouble x,
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gdouble y,
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gdouble halfwidth);
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typedef void (*PathDragHandleFunc) (PathSegment *segment,
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gdouble dx,
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gdouble dy,
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gint handle_id);
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typedef PathSegment * (*PathInsertAnchorFunc) (PathSegment *segment,
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gdouble position);
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typedef void (*PathUpdateSegmentFunc) (PathSegment *segment);
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typedef void (*PathFlipSegmentFunc) (PathSegment *segment);
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typedef void (*PathInitSegmentFunc) (PathSegment *segment);
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typedef void (*PathCleanupSegmentFunc) (PathSegment *segment);
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typedef struct {
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PathGetPointsFunc get_points;
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PathGetPointFunc get_point;
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PathDrawHandlesFunc draw_handles;
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PathDrawSegmentFunc draw_segment;
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PathOnSegmentFunc on_segment;
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PathDragSegmentFunc drag_segment;
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PathOnHandlesFunc on_handles;
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PathDragHandleFunc drag_handle;
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PathInsertAnchorFunc insert_anchor;
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PathUpdateSegmentFunc update_segment;
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PathFlipSegmentFunc flip_segment;
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PathInitSegmentFunc init_segment;
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PathCleanupSegmentFunc cleanup_segment;
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} CurveDescription;
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guint
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path_curve_get_points (PathSegment *segment,
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gdouble *points,
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guint npoints,
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gdouble start,
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gdouble end);
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void
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path_curve_get_point (PathSegment *segment,
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gdouble position,
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gdouble *x,
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gdouble *y);
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void
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path_curve_draw_handles (GimpDrawTool *tool,
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PathSegment *segment);
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void
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path_curve_draw_segment (GimpDrawTool *tool,
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PathSegment *segment);
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gdouble
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path_curve_on_segment (PathSegment *segment,
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gint x,
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gint y,
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gint halfwidth,
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gint *distance);
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void
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path_curve_drag_segment (PathSegment *segment,
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gdouble position,
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gdouble dx,
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gdouble dy);
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gint
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path_curve_on_handle (PathSegment *segment,
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gdouble x,
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gdouble y,
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gdouble halfwidth);
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void
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path_curve_drag_handle (PathSegment *segment,
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gdouble dx,
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gdouble dy,
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gint handle_id);
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PathSegment *
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path_curve_insert_anchor (PathSegment *segment,
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gdouble position);
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void
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path_curve_update_segment (PathSegment *segment);
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void
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path_curve_flip_segment (PathSegment *segment);
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void
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path_curve_init_segment (PathSegment *segment);
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void
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path_curve_cleanup_segment (PathSegment *segment);
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/* This is, what Soleil (Olofs little daughter) has to say to this:
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vffvcccccccccccccggfc fvx^[c^[x^[x^[x^[x^[x^[x^[ v xbvcbvcxv cxxc xxxx^[x
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xz^[c^[x^[x^[x^[x^[x^[x^[xxxxxxcccccccxxxxxxxxxxxxxxxv<78>"<22>p'
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hj^[[24~^[[4~^[[1~^[[4~^[[1~^[[4~ ^[[D^[[Bk^[[B,,,,,
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,^[[2~^[[4~^[[6~^[[4~l^[[6~,l' .holg^[[B^[[B n,,klmj ^[[B^[[1~j ^[[P^[[B
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^[[D^[[4~^[[6~nb ^[[A^[[C ^[[Akj^[[B ^[[A^[[C^[[A
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...^[[1~^[[D^[[4~^[[2~^[[C^[[B,^[[A^[[2~^[[C^[[2~^[[A^[[3~^[[A^[[4~ ^[[2~
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^[[2~p<>- ., <20>^[[A<>pl., k,km ,
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m,^[[5~^[[6~^[[2~^[[C^[[3~p^[[A^[[B<>^[[2~^[[B^[[6~^[[1~, .^[[D^[[4~^[[2~^[[Db
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.l, .,.,m ^[[2~p<>l. ik
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^[[20~kl9i^[[20~^[[20~^[[20~^[[21~^[[21~^[[21~^[[21~^[[21~^[[21~^[[20~m +
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^[[A^[[5~^[[G^[[D ^[[5~^[[1+^[[C
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*/
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#endif /* __PATH_CURVES_H__ */
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